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MAX1232CPA 微处理器监控器

发布时间:2008/5/28 0:00:00 访问次数:456

max1232cpa 微处理器监控电路

概述

the max1232 microprocessor (µp) supervisory circuit provides µp housekeeping and power-supply supervision functions while consuming only 1/10th the power of the ds1232. the max1232 enhances circuit reliability in µp systems by monitoring the power supply, monitoring the software execution, and providing a debounced manual reset input. the max1232 is a plug-in upgrade of the dallas ds1232.

a reset pulse of at least 250ms duration is supplied on power-up, power-down, and low-voltage brownout conditions (5% or 10% supply tolerances can be selected digitally). also featured is a debounced manual reset input that forces the reset outputs to their active states for a minimum of 250ms. a digitally programmable watchdog timer monitors software execution and can be programmed for timeout settings of 150ms, 600ms, or 1.2s. the max1232 requires no external components.

关键特性 应用
  • consumes 1/10th the power of the ds1232
  • precision voltage monitor—adjustable +4.5v or +4.75v
  • power-ok/reset pulse width—250ms min
  • no external components
  • adjustable watchdog timer—150ms, 600ms, or 1.2s
  • debounced manual reset input for external override
  • available in 8-pin pdip/so and 16-pin wide so packages

  • 汽车系统
  • 计算机
  • 控制器
  • 高精度µp电源监视
  • 智能仪表

    key specifications: microprocessor supervisors
    part number number of monitored voltages reset threshold range (v) active-low reset output active-high reset output min. reset timeout range watchdog feature nom. watchdog timeout range supervisor features reset thresh. acc. (% at +25°c) max. icc (µa) package package type operating temp. range (°c)
    max1232 1 3.3 to 5.5

    max1232cpa 微处理器监控电路

    概述

    the max1232 microprocessor (µp) supervisory circuit provides µp housekeeping and power-supply supervision functions while consuming only 1/10th the power of the ds1232. the max1232 enhances circuit reliability in µp systems by monitoring the power supply, monitoring the software execution, and providing a debounced manual reset input. the max1232 is a plug-in upgrade of the dallas ds1232.

    a reset pulse of at least 250ms duration is supplied on power-up, power-down, and low-voltage brownout conditions (5% or 10% supply tolerances can be selected digitally). also featured is a debounced manual reset input that forces the reset outputs to their active states for a minimum of 250ms. a digitally programmable watchdog timer monitors software execution and can be programmed for timeout settings of 150ms, 600ms, or 1.2s. the max1232 requires no external components.

    关键特性 应用
    • consumes 1/10th the power of the ds1232
    • precision voltage monitor—adjustable +4.5v or +4.75v
    • power-ok/reset pulse width—250ms min
    • no external components
    • adjustable watchdog timer—150ms, 600ms, or 1.2s
    • debounced manual reset input for external override
    • available in 8-pin pdip/so and 16-pin wide so packages

  • 汽车系统
  • 计算机
  • 控制器
  • 高精度µp电源监视
  • 智能仪表

    key specifications: microprocessor supervisors
    part number number of monitored voltages reset threshold range (v) active-low reset output active-high reset output min. reset timeout range watchdog feature nom. watchdog timeout range supervisor features reset thresh. acc. (% at +25°c) max. icc (µa) package package type operating temp. range (°c)
    max1232 1 3.3 to 5.5
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